1、letter的词典解释是：信;信函If you write aletter to someone, you write a message on paper and send it to them, usually by post。2、letter的例句是用作名词(n.)She balled the letter into a wad.她将信揉成一团。3、letter名词:letterer；过去式:lettered；过去分词:lettered；现在分词:lettering；第三人称单数:letters。